Sectional boiler



(No Model.)

W. H. PAGE. SEGTIONAL BOILEB..

Patented Julie 2'7, 1893.

Tu: Nnnms PETERS no.. moommo.. wAsHmcfcN. n. c4

UNITED STATES PATENT OFFICE.

WILLIAM ILPAGE, OF NORWICH, CONNECTICUT, ASSIGNOR TO THE WM. H. PAGEBOILER COMPANY, CF SAME PLACE.

SECTIONAL BOILER.

SPECIFICATION forming part of Letters Patent No. 500,507, dated June 27,1893.

Application filed January 18, 1893. Serial No. 458,832. (No model.)

To all whom it may concern,.-

Beit known that LWILLIAM H. PAGE, a citizen of the United States,residing at Norwich, in the county of New London and State ofConnecticut, have invented certain new and useful Improvements inSectional Boilers; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

My present invention relates to improvements in sectional boilers moreparticularly designed for heating hot water for use in hotwatercirculating systems for heating houses, stores, shops, and other places;and the objects of the invention are, first, to provide a novel form offlrevpot adapted to the circulation of waterwithin and around the same,which will be adapted to upper sections of any desired form, and whichwill prevent the water therein from chilling the re within the pot;secondly, to provide a novel form of' upper or top section adapted forreceiving a vessel to heat the contents thereof and .also to provide forthe circulation of water therein and for the escape of smoke andproducts of' combustion the heat in which is utilized to the bestadvantage; and finally to so construct and arrange the parts of thefurnace that an expansion-tank can be used in connection therewith,whichktank is adapted for operating a regulator to control the draftauto# matically through the furnace.

With these and other ends in view, the first part of my inventionconsists of a fire pot cast or made of a single piece of met-al and com`prising the inner wall, an outer wall surround-v ing the inner wall andforming therewith an intermediate water chamber, and a crown sheethaving vertical smoke flues and hollow radial arms which connect thesurrounding water chamber with a central bowl or depression arranged inthe crown-sheet.

The second part of my invention consists in the combination with thecrown sheet of a fire pot provided with the central bowl or depression,of a top section having a water chamber in its upper part and with twodepending annular anges or rings, the inner flange or ring beingconnected'with the central depression or bowl of the crown sheet and theouter flange or ring resting upon the crown sheet outside of the smokefines therein, and an external casing arranged between the top or uppersection and the crown sheet of the fire pot. The two surrounding flangesor rings of the upper section are arranged to form a smoke chamberbetween them, and one of said flanges having an opening atone sidethereof to permit the products of combustion to pass from the innersmoke chamber into the outer smoke chamber formed by and between theoutside flange or ring and the external casing. The products ofcombustion are thus caused to pass from the smoke flues of the crownsheet into an inner smoke chamber and lthence around an outside smokechamber between the fire pot and the upper or top sec tion of thefurnace; and in this top section is provided a vertical opening in whicha vessel can be placed for the purpose of heating the contents of thesame. This will be found very advantageous when the furnace is used insmall stores or shops where it is very often desired to boil water, orfor heating glue, or for various other purposes.

The invention further consists in the combination of a fire pot havingthe central depression of bowl in its crown sheet, an upper sectionprovided with a water chamber and with a depending ring or flange whichis connected with the upper part of the central bowl or depression, andan expansion tank secured in the upper part of the top section andfitting in the depending flange or ring thereof and in the depression orbowl in the crown sheet, said expansion tank being arranged out ofContact with said depending flange or ring and with the depression orbowl so as to leave an intermediate water chamber in which the water isfree to circulate through the water chamber in the lire pot, thedepression or bowl thereof, the chamber between the eX- pansion tank andthe depending flange, and the water chamber in the top section of thefurnace.

The invention further consists in the novel combination of devices andpeculiar construction and arrangement of parts as will be hereinaftermore fully described and particularly pointed out in the claims.

IOO Y I have illustrated my improved sectional boiler in theaccompanying drawings, for`ming a part of this specification, and inwhich- Figure 1 is a vertical sectional view through the boiler. Fig. 2is a top plan view looking down upon the crown sheet of the fire pot,vthe upper section andthe external 'casing'f the;` boiler being removed.Fig. 3 is abottom plan* View of the top or upper section of the fur- 1onace, the tire pot and the external casing be-gy ing omitted.

Like letters of reference denote corresponding parts in all the gures ofthe drawings, re ferring to which- A designates the fire `pot of A'myimprovedf sectional boiler, and Bis the top or upper se`c'" tion of theboiler. This tire pot is constructed or cast' inr la single piece infcontradistinction tearre pot inwhich `the "parts thereof-'are zo 'made'or cast'inseparate piecesnand united or l joined together by peculiarjoint's,=an example of *wh-ich 'isdisclosed in lmy prior patent of J une17, 1890, No. 430,589. In this form of boiler, theinternalandrexternalwalls of the z 5 ire1potarecast in'separate pieces andfjoined;

*at the base "byf means of groove fand-cement jointsyand the' idoorcasingf-is-'falso cemented;

ont-o the externalwall of the firepot. But in? my pl'es'entinfvetion,the external'and' inter- 13o n'al `wallsofthe tire pot, andfthe' crownsheet` thereof, arey made orV casty in afsingle piece' `of metal,and'said crown l sheet has ttransverse -smoke 'hues `and -hollow 1radial harms "which forma continuonswater Ipassage for the ci`r.

3 5 cuflationlot `water from thelsurronndin'g cham-g berfto the centralbowl' or` depression =i'n the` "crow-n sheet of'th'e-refpot. Theexternal and :internal-walls, a, a', re-g "spectively, of the tire pot`are cast-'integrali 4o withthe' connecting `webfa at" the bottom of;thewalls, and the 'crownl'sheet' Cfof thelirel pot is also integral withthe-internal Yandfexf ternalwalls @,a. -fThis crownsheet is pierced,`with transverse passages '-c, c, forming the? F smoke fines for the:passage f of thelpr'odn'cts of combustionfrom therefpot; and theseIsmoke fines 'are T*separated f by the radialhoh` low arms Dwhichcommunicate with `'the 'up-1 per part Aof l the "Water chamber {Afformed-by 5o -`andl between thelwalls a, a', the iinner ends of thehollow* radial i"arms D discharging into al bowl or depression@ formedinthe center of. v`thecrownsheet,'as clearlylshown. The'inner surface ofthe internalfwall a" of 'the ireipotl *islprovidedwith'a multiplicityf'projections'X ory points' d 'which extend' entirely =around= thelnternall wallandt `for asuitable distanc'eabove the vgrate; "and -theseprojections d ffserve Ikto@ keep the fuel in the fiirelpot from'havingdi 6o rectcontactwitlt the internal wall a', and thus 'prevent' thecoldwater enterin'gthe' *chamber A from chilling the fire in the firepot. The usu'alfeed door e' is provided inthe side ofi the! firei'pot 'fabove thef projections or' teeth' d 6 5 therein; and* belowthe fire potis arrangedthe grate 4and ash pit, l which may be 'of 'the-ordi-gt naryor any preferred construction. This* tire pot may be used in dierentstyles of boilers and in connection withone or more upper or topsections of any preferred style; but in a low down boiler speciallyadapted for hot water heating and for use in stores or shops, Iprefer-to-use-the upper section-B illustrated 'more particularly by.Figs. l and 3 of the drawings. "Thistop sectionB is provided with awater chamber F in its upper part and with .two flanges or rings G, H,which are preferably arranged concentric with each other. This top orupper section Bandits depending flanges also constitute a single pieceor casting, as they are made integral with each other, and adapted to bequickly and easily fitted and connected to the tire pot. The top sectionhas a vertical central opening formed "therein which extends'y throughnthe-water chamber F therein, vandf-th-e innerdepending ange' G isconcentric with ithis opening; said ange G Ldepending from the topsection'for a suitable f distance. This inn-erl dependingI flange G isdesigned to be connected with -the crown sheet of' the'ltirefpot aroundlthe central "depression or bowl" thereof Vand `asone means for easily:'an'd 'cheaply connecting the central fiange or ring of the top sectionwith the crown sheet, I provide theI bowl orl depressiom-at itsupperedge, withia series of-Tscrew threads with-which' engage rsimilar screwthreads formed; on the flower part of the dependinglaniag'eGr,y thescrewthreailedjolntf betweenE the bowl' of the/crown Qsheet Afla11'., *e Gf`the top section' being indicated latfg in Fig. lof the drawings. Theex-Eternal integral'fliianfge Hr 'of tt'hett'op-section is arranged aroundthe internal .flange Gland-at ='a=si1itable distancel therefrom 'toform"fan' initermediate smolre fcha'mberil; and "these *flangesAGigi-U01?4 the l top section :fare "s'o'disiposed' that-when the boi-leris puttogether' the f external lin tegral l'flange 2H f will f restonthe "erownfsheetlC outside vof lthefsmekeflues therein =so` th'at Lthesmoke jand fp'r'o'du'cts of "combustion which pass through it-hesmoke.luesin the'fcrown Isheet Ewifll be -Adis'eharged =directly f ihtotliefsm'oke chamber Ii between Atheinner vand external lflanges fG,fl-I;6t' the -topsection The'eXternal iintt-5gral= flange H f' of' thetop 'section is f providedyiat th'efrent side of the boi'lfcr,with-atransverse u passage or opening'rhythroughwhichflthe'sifnkeL andproducts Yof vcombustiofn from the' cha'rnberv I 'm'ayl pass into an'out-'er ffsurrounding smoke chamber gJ which is formal-5d f by andbetween "the internal ffiangeHiand E:an 4"external lmetallic casingj.lhisfcasingjisfarrangedaround theiian'ge for vring H1 of the top'section and v nearly Hushfwththe` si'des of the tire pot-and thew'faterchamber of the 1 top fse'ction, and this casing jfisl 1heldfor confinedinf position by flanges jfjl; provided1 on' the opposihg'faces vlofthetopfsection'ian'd 'the crown lsheet,- near the peripheries thereof, iasshown 'by' Fig.- 1. The' top 'sectionlis furtherp'rovided with avertical opening K #which extends through the water chamberF' in 4the 1top section' Eand communicates with thes'moke'chambers gJ, I,

IZO

at the opening 77, provided in the outer flange or ring I-I of the topsection; and in this opening K can be fitted any suitable Vessel whichis thus adapted to have its bottom exposed to the action of the heatcontained in the products of combustion as they pass through the openingh between the chambers I, J, in the top section of the boiler. Theproducts of combustion are not permitted to escape directly from theinternal smoke chamber I into the exit pipe, but they are caused to passhorizontally from the inner smoke chamber through the opening h at thefront of the boiler and then pass backward around the outer smokechamber J tothe pipe-hole at the rear side of the boiler, whereby theheat in the escaping .products of combustion are utilized to the bestadvantage in heating the water contained in the chambers of the topsection and the radial arms D of the crown sheet.

In a boiler adapted for heating water for use in water circulatingsystems, it is desirable to automatically control the draft passingthrough the ash pitof the furnace or boiler, and to the accomplishmentofthis end,

I have constructed the top section B and the fire pot inthe mannerdescribed so that an expansion tank L can be fitted in the flange G ofthe top section-andthe depression or bowl of the crown sheet, which tankis adapted to be filled with water and to be connected with an automaticdraft regulator, one example of which is shown and described in mypending application filed August 8, 1892, Serial No.'442,502. This tankL is cast or made in a single piece, and it is imperforate so that itdoes not communicate with the water chambers in the boiler.

The tank is fitted in the central opening and the flange or ring Gr ofthe top section,

and with its bottom in the depression or bowl in the crown sheet, butthe walls of the tank do not contact with the flange G or the depressionso that a surrounding space M is provided in which the water is free tocirculate around the tank, the water passing from the chamber A throughthe radial arms D in the crown sheet, thence to the depression or bowl,the chamber M, and the chamber F in the top or upper section B of theboiler.

The operation and advantages of my invention will be readily understoodand appreciated by those skilled in the art from the foregoingdescription taken in connection with the drawings.

I am aware that changes and alterations in the form and proportion ofparts and details of construction of the mechanisms herein shown anddescribed as an embodiment of my invention can be made without departingfrom the spirit of the invention, and I therefore reserve the right tomake such modifications as fairly fall within the scope of my in-Vention.

Having thus fully described my invention, what I claim as new, and`desire to secure by Letters Patent, is-

l. In a sectional boiler, the fire-pot comprising an inner wall, anouter wall surrounding said inner wall and forming therewith anintermediate water-chamber, and the crown sheet provided with a centralbowl or depression and the hollow radial arms which communicate withsaid central bowl or depression and with the surrounding water chamber,said radial arms forming between themselves the vertical smoke flueswhich extend through the crown sheet between the bowl or depressiontherein and the inner wall of the re pot, substantially as and for thepurpose described. f

2. In a sectional boiler, the tire-pot cast in a single piece andcomprising the inner wall, an outer wall surrounding said inner wall andjoined thereto at its lower edge by an integral web, and the crown-sheetprovided with the central bowl or depression and the spaced hollow armswhich form between themselves the vertical smoke-fines and whichcommunicate respectively with the central bowl or depression and withthe chamber between. the

inner and outer walls, substantially as described. A

3. In a sectional boiler, the lire-pot comprising the inner wall, anouter wall joined to the inner wall at its lower edge by an integralweb, and the crown sheet, all cast in a single piece, said inner wallprovided with the integral projections on its inner surface, and thecrown sheet having the central bowl or depression and the spaced hollowarms which form between themselves the vertical smoke fines and whichcommunicate respectively with the depression or bowl and with thechamber between the inner and outer walls, substantially as andY for thepurpose described.

4t. The combination with a fire pot having the central chamber and thetransverse smoke flues in its crown sheet, of a top or upper sectioncontaining a water chamber, andthe vertical walls between the crownsheet and the top section and forming therewith the inner and outersmoke chambers I, J, substantially as described.

5. In asectional boiler, the combination with a tire pot having thecrown sheet provided with the vertical smoke flues and the centraldepression or bowl, ot a top section provided with a water chamber andwith two depending rings or flanges arranged within the edge of saidsection, one of the flanges or rings being connected with the crownsheet around the central depression therein and the other flange restingonthe crown sheet outside of the plane of the smoke fines, therebyformingv a smoke chamber I between the two Hanges or rings G, I-I, andan external casing between the top section and the crown sheet IOO 1.3ofchamber "M v"and y:the twoconnected rsrnokef innenwall and the Hexternallmall being providedfwith `the transversefopeni'ng 7l/and the`topisection havingf alvertical opening' `Kor i the purpose ldescribedsubstantially as -set forth.

9. 3vIna sectional boilerithe'combination; of 'a fire "pot havingViitscrewn sheet :provided *with fa central bowl or 'depression and Athe`ranged. Ato`"fo1xn afsmokechamberflibetwe'en;` smokeuesfontsidefcfsaidbowl, the' topA sccfthe same, one ofsaid` flanges being connectedltothe crown sheet around thev central depres 'sion therein and theouteri'lange bearingfoni the crown sheet outside of `"che line c ofvthe@ smoke fines;snbstantiallyasand "for the pur-L` pose described.

`7. `-Inl a sectional boiler, the combinationof a re pot having itscrown sheet"providedl with* theltransverse s moke y'flu es; thetopf-secll tioni having awater chamber; andv the-vertical' vWallsarrangedbetween*thecrown 'sheet andithe top section"and`for1ningtherewith theintern al'` andfexternal smoke 'chambers' I, *J ,sb-ifstantiallyas and for thel purpose described. 8. \Ina: sectional boi-1er,therconibination ofi a-f crown sheet provided with f the' transverse`'smokelu es land the central "depression, the? top 'section having lthewaterch-amber;the"r vertical walls between the topsection and the crownsheet and forming the centralwater chambersl, 5J, 1 said vertical`Wall'l between the* tioni havin gawater chamber; the annu'larverticalwall' or partition Il between thet topsection* andthecrownlsheet and having tslower Vedge connected lto x"the dbowl orldepression fwithinthe lline f i#smke fiues inthecrown sheet, BAVandfthe "depending tank suspended within thewater chamberof the' top isection, theannnla'r-verticalwalhandf thebo'wlor de- "pression'inthel"crown *'sheetywherebyra narfrow water chamberfM isV Iprovided betweenf the 'annular vertical wallLzthe bowhand the suspended tank and thecontents ofsaidchamfberare subjected to r.the:'directfaction ofthe--escapin'g products ffwcom'bnation-Whichim- 'pinge-against the"bowlxand the=annular`wall,

l`-s1ibstan`tiallyasanl for 'the purposedescribed.

Intestirnonywliereo ffIfa'X my signatu reT in y'presence ftwo=witnesses.

`WIET IA-M I-I. PAGE. "Witnesses:

fILUcIUslBRoWN, lFRANK. H. `=PATRICK.

